[Qt-creator] Code completion is unable to find header files

[Orgad Shaneh]

Add in your pro file:
INCLUDEPATH += /usr/include/SDL


On Mon, Dec 31, 2012 at 12:19 PM, Nikos Chantziaras <realnc at gmail.com>wrote:

> I've run into a nasty problem with Qt Creator (I'm using 2.6.1 on Gentoo
> Linux) where it can't find header files I include and thus code
> completion for anything in those headers isn't working.
>
> Case in point:
>
>    #include <SDL.h>
>
> Creator can't find it because the full path to that header is:
>
>    /usr/include/SDL/SDL.h
>
> However, I don't want to use:
>
>    #include <SDL/SDL.h>
>
> instead.  That's not the correct way to do it, as it breaks portability.
>   Some systems don't use "SDL/" but can have that header in "SDL1.2/" or
> "SDL12/" or "SDL-1.2/" or whatever.  The correct way to do this is to
> use pkg-config.  In my project file:
>
>    CONFIG += link_pkgconfig
>    PKGCONFIG += sdl
>
> Qt Creator is not able to pick that up.  So as a workaround, which seems
> to work fine with generic projects, I provided a "ProjectName.includes"
> file with this in it:
>
>    /usr/include/SDL
>
> But Creator doesn't seem to care.  This works just fine for non-qmake
> projects.  But with qmake projects, Creator seems to ignore *.includes
> files?
>
> What can I do?
>
> This is of course not limited to SDL. The same problem arises with
> anything that uses pkg-config to provide include paths and you're not
> supposed to hardcode the path prefix into your #include directives.
>
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>
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